(Very) Hard AND nice puzzles
The following list contains portal puzzles that have been rated as nice or very nice and that are difficult. These puzzles are recommended for experts - and allow some time to solve.
| Description | solved | Rating | |
|---|---|---|---|
 | Wings by Sabrar (on 7. June 2022, 16:17) | 14 |  90 % |
| Colorguru Chaos Deconstruction: Renbans by crispy16 (on 23. June 2022, 05:33) | 27 | 99 % |
| Parcae by Kafkapharnaum (on 20. August 2022, 18:18) | 27 | 98 % |
| Whispering Worms by Lizzy01 (on 27. September 2022, 10:46) | 12 | 93 % |
| 3etween 2 (Between lines sudoku) by Qodec (on 5. November 2022, 11:32) | 65 | 97 % |
| No Black Dots by mormagli (on 7. November 2022, 22:06) | 28 | 99 % |
| Killer RBC1-6 by RockyRoer (on 3. February 2023, 11:42) | 35 | 95 % |
| Division Cell by billybobo445 (on 12. May 2023, 04:48) | 49 | 98 % |
| To The Nines by arbitrary (on 9. October 2023, 23:05) | 12 | 93 % |
| Screwtape's Spiral by ndsurgenor (on 14. July 2024, 12:00) | 18 | 95 % |
| Doublers and Halvers by chrisjnap (on 2. August 2024, 00:05) | 15 | 93 % |
| Liar Japanese Sums: 48 Hour Special by SamuPiano (on 12. August 2024, 15:44) | 22 | 98 % |
| Dark Centers of the Universe by Groktilian (on 11. November 2024, 07:00) | 12 | 90 % |
| Set Sail, from A to Sea by Groktilian (on 25. November 2024, 07:00) | 12 | 90 % |
| A Fishing Frenzy by 99%Sneaky (on 13. September 2025, 17:05) | 14 | 95 % |
| Kelowna by Oddlyeven (on 21. September 2025, 15:59) | 28 | 91 % |
| Candles Reconstruction by KNT (on 9. January 2026, 21:28) | 28 | 95 % |
| Purple Reign by billybeth (on 23. February 2026, 08:49) | 38 | 95 % |
| Chess-doku by masetab (on 25. February 2026, 16:03) | 66 | 97 % |
| Japanese Minesweeper (Beginner) by cyddrdrd (on 21. March 2026, 00:00) | 53 | 96 % |
